@charset "utf-8";
html, body, div, span, object, iframe,h1, h2, 
h3, h4, h5, h6, p, blockquote, pre,abbr, address, cite, code,del, dfn, 
em, img, ins,kbd, q, samp,small, strong, sub, sup, var,b, i,dl, dt, dd, 
ol, ul, li,fieldset, form, label, legend,table, caption, tbody, 
tfoot,thead,tr, th, td,article, aside, canvas, details, figcaption, 
figure, footer, header, hgroup, menu, nav, section, summary,time, mark, 
audio, video {
    margin:0;
    padding:0;
    border:0;
    outline:0;
    vertical-align:baseline;
    background:transparent;
    -webkit-tap-highlight-color: transparent;
    outline-style:none;
}
button{
	background:#fff;
}
input,textarea,button{
	border:none;
}
header,nav,main,footer,section,article{
    display: block;
}
html,body{
	display: block;
	width: 100%;
	position: relative;
    font-family: Arial,Microsoft Yahei;
}
body{
	min-height: 100vh;
    line-height:1;
}
ul,ol,li{
    list-style: none;
}
a{
    margin:0;
    padding:0;
    border:0;
    font-size:100%;
    vertical-align:baseline;
    background:transparent;
}
a,a:visited,a:hover,a:active,a:focus {color:#252525; text-decoration:none;} 
input, select {
    vertical-align:middle;
}
textarea{resize: none;}
i{
    font-style: normal;
}
/*css为clearfix，清除浮动*/
.clear::before,
.clear::after{
    content: "";
    height: 0;
    line-height: 0;
    display: block;
    visibility: hidden;
    clear: both;
}
.clear:after{clear:both;} 
.clear{ 
    *zoom:1;/*IE/7/6*/
}
.fl{float: left;}
.fr{float: right;}
.sut{vertical-align: top};
.sum{vertical-align: middle};
.sub{vertical-align: bottom};
.sut-t{vertical-align: text-top};
.sub-t{vertical-align: text-bottom};
.opacity{opacity: 0;};
.flow-hid{overflow: hidden;}
.img-w{display: block;width: 100%;}
.img-h{display: block;height: 100%;}
.img-w-h{display: block;width: 100%;height: 100%;}
.img-w-c{display: block;width: 100%;object-fit: cover;}
.img-h-c{display: block;height: 100%;object-fit: cover;}
.img-w-h-c{display: block;width: 100%;height: 100%;object-fit: cover;}
.position_r{position: relative;}





/* 选项卡 start */
.sec_top{
  margin-top: 110px;
}
#main{
  width: 100%;
  /* min-width: 1200px; */
  padding-bottom: 180px;
  overflow: hidden;
}
.sec_banner{
  width: 100%;
}
.sec_nav{
  width: 100%;
  /* height: 100px; */
  border-bottom: 1px solid #cbcbcb;
  margin-bottom: 110px;
  position:relative;
}
.sec_nav_border{
  width: 1200px;
  height: 100px;
  margin: 0 auto;
  display: flex;
  align-items: center;
}
.sec_nav_border>i{
  display: block;
  width: 120px;
  height: 3px;
  background: #4d80df;
  position: absolute;
  bottom: -1px;
}
.nav_title{
  height: 20px;
  display: flex;
}

.sec_nav ul{
  display: flex;
  margin: 0 auto;
}
.sec_nav li{
  margin: 0 22px;
  font-size: 20px;
  color: #2e2e2e;
  text-align: center;
  cursor: pointer;
}
.sec_nav .sec_nav_hov{
  color: #4d80df;
  
}
.selected_syl{
  display: none;
}


/* 选项卡 end */